<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			input[readonly]{
				background-color: #ADFF2F;
			}
		</style>
	</head>
	<body>
		<form>
			<input type="text" name="uname" readonly="readonly"/>
			<input type="submit" value="提交" />
		</form>
	</body>
</html>
